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2.1 Current, potential difference and resistance

2.1 Current, potential difference and resistance

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Question 1
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An industrial induction furnace uses high-power electromagnetic coils to melt metal scrap.

a.

Write down the equation which links charge flow (QQQ), current (III), and time (ttt).

[1]
b.

During a specific heating cycle, the furnace system delivers a steady current of 8,500 A8,500\text{ A}8,500 A to the coils for a duration of 14 minutes14\text{ minutes}14 minutes. Calculate the charge flow during this cycle.

[2]
c.

State the correct SI unit for charge flow from the following choices:

  • coulombs
  • ohms
  • watts
[1]
Markscheme

2.1 Current, potential difference and resistance Questions

  1. GCSE
  2. /Physics
  3. /2.1 Current, potential difference and resistance

39 exam-style questions on AQA GCSE Physics 2.1 Current, potential difference and resistance, covering 2.1.1 Standard circuit diagram symbols, 2.1.2 Electrical charge and current, 2.1.3 Current, resistance and potential difference, and 2.1.4 Resistors. Each one has a worked solution and a mark scheme showing where the marks go.

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